Silica shell-assisted synthetic route for mono-disperse persistent nanophosphors with enhanced in vivo recharged near-infrared persistent luminescence

Zou, Rui; Huang, Junjian; Shi, Junpeng; Huang, Lin; Zhang, Xuejie; Wong, Ka‐Leung; Zhang, Hongwu; Jin, Dong-Yan; Wang, Jing; Su, Qiang

doi:10.1007/s12274-016-1396-z

Cited by 111 publications

(75 citation statements)

References 41 publications

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“…Moreover, Figure 8D denotes that ML signal is able to penetrate HAP which is the main constituent of bones. These results reveal that Nd 3+ doped Sr 3 Sn 2 O 7 with efficient NIR ML emissions can be used as a novel bio-mechanical sensor material, 37,38 and, these provide a possible way to realize in situ bio-mechanical behaviors visualization inside living body.…”

Section: Biomechanical Behavior In Situ Visualizationmentioning

confidence: 80%

Near infrared mechanoluminescence from Sr₃Sn₂O₇: Nd³⁺for in situ biomechanical sensor and dynamic pressure mapping

et al. 2019

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Mechanoluminescence (ML) is a phenomenon upon external mechanical stimuli and it has found diverse applications such as stress sensing, structure health diagnosis, 3‐D signature, energy harvesting etc because of its unique properties of in situ and real‐time response to the stimuli. However, ML of most of the state‐of‐art phosphors primarily appears within the spectral range from ultraviolet to visible, which does not lie in the biological transparent windows, and, therefore, limits its applications in biological field. Here, we report a strong near infrared (NIR) ML from orthorhombic Cmcm perovskite Sr3Sn2O7: Nd3+, which is peaked at ~ 900 nm and located exactly within the first optical transparent window of tissues. The ML apparates after gradual discharge of the traps deeper than 0.73 eV triggered by the external mechanical stimuli and subsequently excitation of Nd3+ to the state of 4F3/2. The rechargable ML presents well repeatable linearity to loaded force at least up to 5000 N, and it can penetrate tissues easily that are thick up to 30 mm such as pigskin and the ceramic disk of hydroxy apatite which is the main constituent of bone. These results demonstrate the potential application for in situ biomechanical sensor. Meanwhile, by recording and processing these ML signals during signing on a pellet sample, for the first time, we provide a novel signature system based on NIR ML. This could raise the security level of existed signature anti‐countering to a higher level.

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Section: Biomechanical Behavior In Situ Visualizationmentioning

confidence: 80%

Near infrared mechanoluminescence from Sr₃Sn₂O₇: Nd³⁺for in situ biomechanical sensor and dynamic pressure mapping

et al. 2019

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“…Because a single detector can only respond in a small range of optical wavelengths in the biological optical window, an enhancement in the integral intensity of the received signal may improve the signal‐to‐noise ratio for optical bio‐imaging . Multiband‐emissive persistent phosphors thus have a potential superiority compared to single‐band‐emissive persistent phosphors.…”

Section: Resultsmentioning

confidence: 99%

Coordination Geometry‐Dependent Multi‐Band Emission and Atypically Deep‐Trap‐Dominated NIR Persistent Luminescence from Chromium‐Doped Aluminates

Lin

Zhang

Tian

et al. 2018

Advanced Optical Materials

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An abnormal trap distribution and coordination geometry‐dependent multi‐band emission are discovered in chromium‐doped aluminates. The multi‐band and broadband persistent luminescence from 650–1100 nm peaking at 688 and 793 nm from Cr3+‐doped SrAl12O19 is systematically studied via structural and spectroscopic analysis. Solid state nuclear magnetic resonance allows the visualization of various coordination configurations in SrAl12O19, thus offering the possibility of tailoring the local geometry of the emission center to trigger the control of the spectral parameter. Deep tissue ex vivo and in vivo imaging in mice both demonstrate that multi‐band‐emissive SrAl12O19:Cr3+ shows superior, high‐quality near‐infrared (NIR) bio‐imaging in the biological transparency window compared to single band‐emissive (with emission only at 688 nm) SrAl2O4:Cr3+, although SrAl2O4:Cr3+ has a higher luminescent intensity and longer duration at 688 nm. Moreover, by measuring the thermoluminescence spectra the driving force of carrier release is discovered to be only from the deep trap (the depth is > 1 eV), which is different from the generally accepted shallow‐dependent afterglow‐emitting process. These findings pave the way for opening a vista of possible avenues for the enhancement of signal‐to‐noise ratio, the improvement of imaging quality, as well as the understanding of the trapping and de‐trapping process in long‐persistent phosphors.

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“…The excitation spectrum monitored at 697 nm covers a very broad spectral region (from 200 to 650 nm) and consists of four main excitation bands peaking at 273, 328, 410, and 569 nm, respectively. The excitation band at 273 nm is ascribed to the charge transfer band of O 2− -Ga 3+ in ZnGa 2 O 4 host, while the later bands originate from the inner transitions of Cr 3+ , including the 328-nm band originating from the 4 A 2 → 4 T 1 ( te 2 ) transition, the 410-nm band originating from the 4 A 2 → 4 T 1 ( t 2 e ), and the 569-nm band originating from the 4 A 2 → 4 T 2 ( t 2 e ) [19, 20]. Incorporation of Eu 3+ did not appreciably alter the positions of the PLE bands but significantly increased the intensities of the inner transitions of Cr 3+ , with I 410 / I 273 increasing from 0.18 to 0.56.…”

Section: Resultsmentioning

confidence: 99%

“…Eu 3+ in oxide hosts always exhibits a red emission at ~ 700 nm arising from the 5 D 0 - 7 F 4 intra-4 f electronic transition upon short UV excitation into the charge transfer (CT) band at 250 nm [24]. On the other hand, Cr 3+ is a favorable luminescent center in solids because of its narrowband emissions (usually at 700 nm) due to the spin-forbidden 2 E- 4 A 2 transition, or a broadband emission (650–1600 nm) due to the spin-allowed 4 T 2 - 4 A 2 transition [1, 20]. In view of these, Cr 3+ /Eu 3+ co-doped zinc gallate and zinc gallogermanate would yield intense NIR persistent luminescence, owing to that the charge transfer band (CTB) of O 2− -Eu 3+ overlaps with the CTB of O 2− -Ga 3+ , and the emission at ~ 700 nm from 5 D 0 - 7 F 4 transition of Eu 3+ overlaps with that from 2 E- 4 A 2 transition of Cr 3+ .…”

Section: Introductionmentioning

confidence: 99%

Near Infrared-Emitting Cr3+/Eu3+ Co-doped Zinc Gallogermanate Persistence Luminescent Nanoparticles for Cell Imaging

Zhang

Zhu

2018

Nanoscale Res Lett

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Near infrared (NIR)-emitting persistent luminescent nanoparticles have been developed as potential agents for bioimaging. However, synthesizing uniform nanoparticles with long afterglow for long-term imaging is lacking. Here, we demonstrated the synthesis of spinel structured Zn3Ga2Ge2O10:Cr3+ (ZGGO:Cr3+) and Zn3Ga2Ge2O10:Cr3+,Eu3+ (ZGGO:Cr3+,Eu3+) nanoparticles by a sol-gel method in combination with a subsequent reducing atmosphere-free calcination. The samples were investigated via detailed characterizations by combined techniques of XRD, TEM, STEM, selected area electron diffraction, photoluminescence excitation (PLE)/photoluminescence (PL) spectroscopy, and temperature-dependent PL analysis. The single-crystalline nanoparticles are homogeneous solid solution, possessing uniform cubic shape and lateral size of ~ 80–100 nm. Upon UV excitation at 273 nm, ZGGO:Cr3+,Eu3+ exhibited a NIR emission band at 697 nm (2E → 4A2 transition of distorted Cr3+ ions in gallogermanate), in the absence of Eu3+ emission. NIR persistent luminescence of the sample can last longer than 7200 s and still hold intense intensity. Eu3+ incorporation increased the persistent luminescence intensity and the afterglow time of ZGGO:Cr3+, but it did not significantly affect the thermal stability. The obtained ZGGO:Cr3+,Eu3+-NH2 nanoparticles possessed an excellent imaging capacity for cells in vitro.

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Silica shell-assisted synthetic route for mono-disperse persistent nanophosphors with enhanced in vivo recharged near-infrared persistent luminescence

Cited by 111 publications

References 41 publications

Near infrared mechanoluminescence from Sr₃Sn₂O₇: Nd³⁺for in situ biomechanical sensor and dynamic pressure mapping

Near infrared mechanoluminescence from Sr₃Sn₂O₇: Nd³⁺for in situ biomechanical sensor and dynamic pressure mapping

Coordination Geometry‐Dependent Multi‐Band Emission and Atypically Deep‐Trap‐Dominated NIR Persistent Luminescence from Chromium‐Doped Aluminates

Near Infrared-Emitting Cr3+/Eu3+ Co-doped Zinc Gallogermanate Persistence Luminescent Nanoparticles for Cell Imaging

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Silica shell-assisted synthetic route for mono-disperse persistent nanophosphors with enhanced in vivo recharged near-infrared persistent luminescence

Cited by 111 publications

References 41 publications

Near infrared mechanoluminescence from Sr3Sn2O7: Nd3+for in situ biomechanical sensor and dynamic pressure mapping

Near infrared mechanoluminescence from Sr3Sn2O7: Nd3+for in situ biomechanical sensor and dynamic pressure mapping

Coordination Geometry‐Dependent Multi‐Band Emission and Atypically Deep‐Trap‐Dominated NIR Persistent Luminescence from Chromium‐Doped Aluminates

Near Infrared-Emitting Cr3+/Eu3+ Co-doped Zinc Gallogermanate Persistence Luminescent Nanoparticles for Cell Imaging

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Near infrared mechanoluminescence from Sr₃Sn₂O₇: Nd³⁺for in situ biomechanical sensor and dynamic pressure mapping

Near infrared mechanoluminescence from Sr₃Sn₂O₇: Nd³⁺for in situ biomechanical sensor and dynamic pressure mapping